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<H1>NKDModifiedPlesseyBarcode</H1><hr>
<b>Abstract: </b>Plessey barcode object.
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This is an encoder for the Plessey Code. According to the Plessy Code 
Specification, numeric digits are assigned a set value, but the remaining values
can be used for whatever values are desired. This base object supports only the
encoding of digits. The ModifiedPlesseyHexEncoder subclass adds the ability
to encode the letters A through F for full hexadecimal support.
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Wide bar following by narrow space is a "1" bit. 
Narrow bar followed by wide space is a "O" bit. 
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This class uses a 3:1 wide to narrow bar ratio.
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<hr><br><center>(Last Updated 4/21/2003)
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